A group of young learners took part in this year's Jugend Forscht competition. They have developed a machine that can be used to store music from streaming services on a magnetic tape so that it can be listened to offline later.
However, they are not yet sure how to power the "recorder". Aysenur suggests using a lemon battery, as it only consists of items that anyone can easily obtain. Sebastian still finds this too complicated. He would rather have a solar cell on the machine, even though that would probably be too expensive. Finally, Kim comes along and has a small silver disk in her hand, a so-called button battery. This is supposed to generate more voltage because, compared to the lemon battery, a silver electrode is used in addition to the zinc electrode instead of a copper electrode. It is also supposed to be cheaper. Sounds almost too good to be true.
The group decides to test the claims and set up two galvanic cells.
Use the widget below to simulate the two batteries. Find out what voltages the batteries supply by creating the missing components and creating a circuit for each. Then explain which battery would be more suitable. Is only the voltage relevant here?
Electrodes must always be connected via a cable to a voltage source or a voltmeter and also to a solution to create a closed circuit. Both should always be confirmed via a dialog.
Solutions should always be 1 molar: For 1L of a 1M NaCl solution -> 1mol NaCl & 55.5mol H2O (can be scaled)